Cylinder arrangement having a precombustion chamber for combustion engines

Claim 1

In a combustion engine having external ignition, a cylinder arrangement comprising a combustion chamber and a precombustion chamber in communication therewith; said precombustion chamber including a disconnectable cover-like top portion defining a separating plane with the remaining portion of said precombustion chamber, a fuel injection valve and a spark plug supported by said disconnectable top portion and communicating with said precombustion chamber and lying at a predetermined angle within 90 degrees with respect to each other; insert means lining said remaining portion of said precombustion chamber at least directly opposite said injection valve whereby fuel injected onto the lining is quickly vaporized said insert means being of a heat resistant material having low heat conductivity, and said top portion including pressure surfaces formed thereon and abutting against said insert means to force said insert means against the wall of said remaining portion of said precombustion chamber.